Whois Lookup

See whois data related to a domain, IP address or AS number.

Use the Whois Lookup Tool for:

  • Lookup who owns a domain name, IP or AS number, including the registrant's name, organization, email, and contact information.
  • Find out who is responsible for administrative and technical matters.
  • Find out when a domain was registered and when it's due to expire.
  • Lookup how to report abuse related to an IP address, such as spam or other malicious activities.

Our Statistics

Domain Whois for 1,000+ TLDs
110,000+ AS Whois records
8+ million IP Whois records

Frequently Asked Questions

What happened to the previous Whois Lookup Tool?
The Whois Lookup Tool is now integrated in the new reports. You can find the Whois data inside the BGP (Provider), Domain and IP report. See examples below!
How does the Whois Lookup works?
Whois lookup is a powerful way to access all the registration information associated with a specific domain, IP address (IPv4 and IPv6), or AS number. This information is stored in various databases, and our lookup tool queries the appropriate database in real-time to present the whois information instantly. Simply enter a domain name, an IP address (IPv4 and IPv6), or an AS number and click the Find button.
Is the Whois information cached?
For performance and efficiency, the output of our Whois tool is cached for 30 days. This means that if the same query is made within the caching period, the tool will display the cached information rather than querying the database again.


Whois Lookup for dnslytics.com
Whois Lookup for
Whois Lookup for AS40528
Whois Lookup for 2606:4700:4700::1111
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